How is ultrasound used in medical science ?

ultrasound is used to examine internal parts of human body which are otherwise difficult to examine. It is used for imaging and sonography. It detects abnormal growth in tissues and organs inside the body. It is used to remove kidney stones, It is used to check the status of the baby in mother's womb. In the process the ultrasound probe sends the sound waves and records its echo from the internal organs.

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Sound waves with frequencies higher than the upper audible limit of human hearing are called ultrasound. The limit varies from person to person but is approximately 20,000 Hertz. The physical properties of ultrasound are similar to the normal audible sound.

This type of scientific concept is used in many different fields such as navigation, medicine, imaging, cleaning, mixing, communication, testing etc. Even in nature, bats and porpoises use this particular technique for the location of prey and obstacles.

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